Intel EPS1U manual Turn On/Off Timing, Recommended Description

				SSI
		EPS1U Power Supply Design Guide, V1.1
	Table 16: Turn On/Off Timing
Item	Description	MIN	MAX	Units
Tsb_on_delay	Delay from AC being applied to 5 VSB being		1500	ms
	within regulation.
T ac_on_delay	Delay from AC being applied to all output		2500	ms
	voltages being within regulation.
Tvout_holdup	Time all output voltages stay within regulation	18		ms
	after loss of AC.
Tpwok_holdup	Delay from loss of AC to deassertion of PWOK	17		ms
Tpson_on_delay	Delay from PSON# active to output voltages	5	400	ms
	within regulation limits.
T pson_pwok	Delay from PSON# deactive to PWOK being		50	ms
	deasserted.
Tpwok_on	Delay from output voltages within regulation	100	1000	ms
	limits to PWOK asserted at turn on.
T pwok_off	Delay from PWOK deasserted to output	1		ms
	voltages (3.3 V, 5 V, 12 V, -12 V) dropping out
	of regulation limits.
Tpwok_low	Duration of PWOK being in the deasserted state	100		ms
	during an off/on cycle using AC or the PSON#
	signal.
Tsb_vout	Delay from 5 VSB being in regulation to O/Ps	50	1000	ms
	being in regulation at AC turn on.

STATUS

Recommended

Item	Description	MIN	MAX	UNITS
Tvout_holdup	Time all output voltages stay within regulation	21		ms
	after loss of AC.
Tpwok_holdup	Delay from loss of AC to deassertion of PWOK.	20		ms
Tsb_holdup	Time 5VSB output voltage stays within regulation	70		ms
	after loss of AC.